Side gauge pin for platen presses



' March 15, 1932. I

T. NELSON 1,849,585

SIDE GAUGE PiN FOR PLATEN PRESSES Filed Oct. 8, 1930.

Inventor F235" Thomas Nels n,

A Home y Patented Mar. 15, 1932 THOMAS NELSON, OF JUNCTION CITY, OREGONSIDE GAUGE PIN FOR PLATEN PRESSES Application filed October 8, 1930.Serial No. 487,337.

This invention relates to certain new and useful improvements in'gaugepins, and has more particular reference to a type of gauge pin known inthe art as a side gauge pin for use in conjunction with platen presses.

A primary object of this invention is to provide a gauge pin which maybe stamped froma single blank of metal, and which may be used inconjunction with the grippers with which the press is usually equipped,whereby the grippers may be utilized for forcing the spring fingers ofthe pin into gripping engagement with the sheet to be printed.

A still further object of the invention is to provide a gauge pin of thecharacter above mentioned, which is comparatively simple inconstruction, of greater strength and durability than pins heretoforeused for this purpose, and which is otherwise fully adapted for thepurpose designed.

Other objects and advantages of the invention will become apparentduring a study of the following description, taken in connection withthe accompanying drawings.

Figure l is a top plan view of the pin, the same being shown as appliedin position on the press.

Figure 2 is a side edge elevational view Figure 3 is an end elevationalView thereof.

Figure 4 is a longitudinal sectional view taken substantially on theline 4-4 of Figure 1.

Figure 5 is a top plan view of the pin per se.

lVith reference more in detail to the drawings, it will be seen that thepin, as comprehended by the present invention is formed from a singleblank of metal including a body portion 1 that is slit longitudinally ontwo from the free ends of the spring fingers 3 is transversely of thebody inwardly from the free ends of the fingers 3. lVhen in position,

the stop 4 isadapted to abut the adjacent edge of the sheet S.

Adjacent the upstanding stop 4, a portion of the material is bentdownwardly in an opposite direction to the member 4 whereby to provide,adjacent opposite ends of the member 4, penetrating prongs 5 that areadapted to penetrate the usual tympan sheet'T.

The body 1 is also slit on two parallel longitudinally extending lines 6extending inwardly of the body 1 remote from the stop 4 whereby toprovide a relatively narrow elongated spring prong 7 that at its freeend terminatesin a sharpened point 8 which projects beyond thecorresponding end of the body 1.

hen the pin is in position on the press, the spring prong 7 is passedthrough the tympan sheet T in a manner clearly suggested inFigure 1whereby the sharpened end 8 of the prong will rest flatly on the topface of saidv tympan sheet.

When the pin is secured on the tympan sheet, by reason of the springprong 7 passed through the sheet, the sheet S upon which the matter isto be printed, may then be placed on the tympansheet T so that an edgeportion of the sheet S will pass under the freeend portions of thespring fingers 8 whereby said edge of the sheet S will contact the stop4.

The arrangement of parts thus being completed as suggested, the gripperwith which the press is usually equipped, may then be brought intooperation whereby to extend transversely of the pin so that the freeends of the spring fingers 3 will be urged into close contact with thesheet S and the penetrating points or prongs 5 pressed into the tympan'sheet T under the weight and pressure of the said gripper, (the grippernot being shown).

As is well known in the art, on platen presses there are two gripperswhich clasp the sheet being printed on either side of the sheet to holdit in position while the impression is being completed. With the usualgauge pins now on the market, it is impossible to use the left handgripper if a side gauge pin is used. With the pin contemplated by thepresent invention, the gripper is set just to the left of the upright orprojection or stop t and will firmly press the prongs 5 of the pin intothe sheet and hold it more firmly than would be accomplished by thegripper itself. This permits of the use of the left hand grippertogether with the gauge pin and also permits of the gauge pin servingthe purposeof lower teed pins also used in conjunction with platenpresses.

It is thoughtthat the construction, advantage and utility of aninvention of this character will be had by those skilled in the artwithout a more detailed description.

Even though I have herein shown and described the preferred embodimentof my invention, it is to be understood that the same is susceptible tochanges fully comprehended by the spirit of the invention as hereindescribed, and the scope of the appended claims.

Having thus described my invention what- I wish to claim is:

l. A side gauge pin for platen presses comprising a relatively fiat bodyportion, a pair of spring fingers integral with said body and projectingbeyond one end of said body adjacent opposite sides of said body, a stopintegral with said body and extending at right angles thereto betweensaid fingers, and a spring prong integral with said body and having itsfree end projecting beyond that end of said body remote from the freeend of said fingers.

2. A side gauge pin for platen presses comprising a relatively fiat bodyportion, a pair of spring fingers integral with said body and projectingbeyond one end of said body ad jacent opposite sides of said body, astop integral with said body and extending at right angles theretobetween said fingers, aspring prong integral with said body and havingits free end projecting beyond that end of said body remote from thefree end of said fingers, and penetrating prongs integral with said bodyadjacent said stop.

3. A side gauge pin for platen presses comprising a relatively flat bodyslit longitudinally adjacent opposite side edges thereof whereby toprovide a pair of spring fingers the free ends of which are adapted tooverlie and engage the sheet to be printed upon, said body inwardly fromthe ends of said fingers being bent on a transverse line to provide anupstanding projection constituting a stop for engagement with theadjacent edge of said sheet, said body being further slit longitudinallywhereby to provide an integral prong bendable relative to said body,said prong having one end thereof projecting beyond that end of saidbody remote from said stop, and adapted to be passed through the tympansheetof the press.

l. A side gauge pin for platen presses comprising a relatively flat bodyslit longitudinally adjacent opposite side edges thereof whereby toprovide a pair of spring fingers the free ends of which are adapted tooverlie and engage the sheet to beprinted upon, said body inwardly fromthe ends of said fingers being bent on a transverse line to provide anupstanding projection constituting a stop for engagement with theadjacent edge of said sheet, said body being further slit longitudinallywhereby to provide an integral prong bendable relative to said body,said prong having one end thereof projecting beyond that end of saidbody remote from said stop and adapted to be passed through the tympansheet of the press, and said body at said transverse line of bendadjacent opposite ends of said stop being bent in a direction oppositeto said stop whereby to provide a pair of penetrating points adapted tobe forced into said tympan sheet under pressure of the gripper member ofthe platen press.

In testimony whereof I afiix my signature.

THOMAS NELSON.

